DP405 Digital Two-way Radio
User Manual
15
8
Trouble shooting
No.
Problem
Cause and Solution
1
Failed to power on
A. The battery is used up
–charge the battery or change to
a new battery;
B. Volume switch is faulty
– repair at the specified service
station;
2
Small voice during
call
A. speaks too far from the microphone
– the ideal distance:
3-10cm
；
B. wrong volume setting
– turn the volume knob clockwise
to increase the volume;
3
Failed to transmit
or receive
A. wrong channel parameters
– reset the parameters and
try again;
B. the group identity for default contact is wrong
– select a
right group;
C. Beyond the communication scope.
